{"title":"基于声发射特征的不同加载条件下砂岩渐进破坏过程","authors":"Juanxia Lyu, Caiyuan Fan, Shijie Li, Zhen Huang","doi":"10.1111/ffe.14621","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>This study investigates the acoustic emission (AE) characteristics during sandstone failure under three typical mechanical tests:direct shear test (DST), Brazilian splitting test (BST), and uniaxial compression test (UCT). Results show a significant difference in the log-linear slope between AE count and amplitude across different tests, reflecting variations in the scaling distribution characteristics of AE signals. Peak frequency distributions vary, with DST predominantly in the 150- to 200-kHz range, BST in the 0- to 100-kHz range, and UCT showing a mixed distribution. RA (rise time/amplitude) and AF (counts/duration) analysis classified crack types, indicating shear-type signals dominate in DST, tensile-type signals in BST, and a slight dominance of tensile cracks in UCT. Shear cracks generally exhibit higher AE energy, especially in high-energy ranges (10–1000 mV*mS), whereas tensile cracks dominate the low-energy range (0.1–1 mV*mS). These findings advance the understanding of rock failure mechanisms and AE signal behavior.</p>\n </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2540-2556"},"PeriodicalIF":3.1000,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Progressive Failure Process of Sandstone Under Different Loading Conditions via Acoustic Emission Characteristics\",\"authors\":\"Juanxia Lyu, Caiyuan Fan, Shijie Li, Zhen Huang\",\"doi\":\"10.1111/ffe.14621\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>This study investigates the acoustic emission (AE) characteristics during sandstone failure under three typical mechanical tests:direct shear test (DST), Brazilian splitting test (BST), and uniaxial compression test (UCT). Results show a significant difference in the log-linear slope between AE count and amplitude across different tests, reflecting variations in the scaling distribution characteristics of AE signals. Peak frequency distributions vary, with DST predominantly in the 150- to 200-kHz range, BST in the 0- to 100-kHz range, and UCT showing a mixed distribution. RA (rise time/amplitude) and AF (counts/duration) analysis classified crack types, indicating shear-type signals dominate in DST, tensile-type signals in BST, and a slight dominance of tensile cracks in UCT. Shear cracks generally exhibit higher AE energy, especially in high-energy ranges (10–1000 mV*mS), whereas tensile cracks dominate the low-energy range (0.1–1 mV*mS). These findings advance the understanding of rock failure mechanisms and AE signal behavior.</p>\\n </div>\",\"PeriodicalId\":12298,\"journal\":{\"name\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"volume\":\"48 6\",\"pages\":\"2540-2556\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2025-03-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14621\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fatigue & Fracture of Engineering Materials & Structures","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14621","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Progressive Failure Process of Sandstone Under Different Loading Conditions via Acoustic Emission Characteristics
This study investigates the acoustic emission (AE) characteristics during sandstone failure under three typical mechanical tests:direct shear test (DST), Brazilian splitting test (BST), and uniaxial compression test (UCT). Results show a significant difference in the log-linear slope between AE count and amplitude across different tests, reflecting variations in the scaling distribution characteristics of AE signals. Peak frequency distributions vary, with DST predominantly in the 150- to 200-kHz range, BST in the 0- to 100-kHz range, and UCT showing a mixed distribution. RA (rise time/amplitude) and AF (counts/duration) analysis classified crack types, indicating shear-type signals dominate in DST, tensile-type signals in BST, and a slight dominance of tensile cracks in UCT. Shear cracks generally exhibit higher AE energy, especially in high-energy ranges (10–1000 mV*mS), whereas tensile cracks dominate the low-energy range (0.1–1 mV*mS). These findings advance the understanding of rock failure mechanisms and AE signal behavior.
期刊介绍：
Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
